What are the various states of operation in power system?

Sharad Jaiswal
Sharad Jaiswal

Posted On: Sep 24, 2020


The various states are:

  1. Normal state:
    If both operating constraints and load are satisfied it means the system is normal. The total demand on the system in the normal state is met by satisfying all the operating constraints.
  2. Alert state:
    The system is in an alert state if the level of the security of the system falls below a certain level or the disturbance of the system increases.
  3. Emergency state:
    If the disturbance is severe in an alert state, the system will push into the emergency state. With corrective action, the system will return either to a normal state or in an alert state.
  4. Extremis state:
    During the emergency state, if no preventive action takes place then it goes to either extremis state. In this case, the control action has taken place to bring the system back to either the normal state or the emergency state.

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